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The Real World of Sine and Cosine Functions

Directions:
  1. You will need to read through the web links to the right.
  2. Watch the video and pay attention to the key ideas listed.
  3. Click on Quizzes to take a quiz over this lesson.
Resources (focus on how to find the amplitude, period, phase shift, and vertical shift)
  • http://people.hofstra.edu/Stefan_Waner/trig/trig1.html
  • http://en.wikipedia.org/wiki/Sine_wave
  • http://jwilson.coe.uga.edu/emt669/Student.Folders/Jeon.Kyungsoon/IU/trig/F.wheel.html

Lesson Videos

Key Concepts to pay attention to:
  1. Find the amplitude, period, phase shift, and vertical shift (equilibrium)
  2. Use the information from (1) above to write the equation
  3. Sin - start at midline 
                  Cos - starts at top amp   
                  Cos "negative cos" - starts at bottom amp
Key Concepts to pay attention to:

1)  How to write a sine and cosine function

2)  Finding the omega and phi


Worksheets

Analyzing Trig Functions         Answers
Real World Applications         Answers
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